Keen photographers urged to snap tidal changes

An online project is encouraging people to help create a record of rising sea levels.

The organisation Green Cross Australia said people in coastal areas of South Australia had been urged to snap and submit photos of the latest king tides.

Although the tides are naturally-occurring and not due to climate change, the project organisers are keen to help Australians learn how coastlines change over time.

The Witness King Tides program already has collected thousands of images from coastal areas of New South Wales, Queensland and southern Tasmania.

The latest phase is encouraging people in South Australia and Victoria to join the effort, as well as those in more coastal zones of Tasmania.

Green Cross Australia said about 85 per cent of the Australian population lived within 50 kilometres of the coast and sharing photos could help understanding of how tidal movement affected beaches and shorelines and flood risks it created.